Premium silicone adhesive polyester tape for high-temperature masking and splicing applications, operating from -60°F to 425°F with chemical resistance and clean removal properties.
3M™ Polyester Tape 8403 is a premium high-temperature masking tape engineered for demanding industrial applications. This translucent green polyester tape features a silicone adhesive that provides exceptional bonding on difficult-to-adhere surfaces, including silicone-coated papers and films. The tape operates reliably across an extensive temperature range from -60°F (-50°C) to 425°F (218°C), making it ideal for aerospace, composite bonding, and chemical processing applications. With a thickness of 2.4 mil and dimensions of 24 inches wide by 72 yards long, this professional-grade tape delivers superior durability and clean removal characteristics.
This thick polyester tape is specifically designed for applications requiring both chemical resistance and thermal stability. The silicone adhesive formulation ensures clean, one-piece removal from most surfaces without leaving residue, making it perfect for masking metal surfaces during acid or caustic chemical milling baths. The tape's exceptional flexibility in autoclave conditions and robust construction make it ideal for composite bonding operations where vacuum bags and parts require secure temporary holding. Its translucent green backing provides easy identification for splicing applications, while the chemical-resistant properties protect against anodization and other aggressive environments.
Meeting several aerospace specifications including ASTM D3330, ASTM D3652, and ASTM D3759, this 3M tape represents industrial-grade quality and reliability. The tape's 140% elongation at break provides flexibility without compromising adhesion, while the 46 lb/in tensile strength ensures consistent performance. Supplied as 1 roll per case, this professional masking solution is engineered for industrial and occupational use only, delivering consistent results across aerospace, automotive, electronics, composite manufacturing, and metalworking industries.
Key Features
- Silicone adhesive provides clean, one-piece removal from most surfaces without residue
- Operates reliably in extreme temperatures from -60°F to 425°F with maintained flexibility
- Chemical resistant backing and adhesive for durability in anodization and aggressive environments
- Thicker polyester construction (2.4 mil) offers superior durability compared to standard tapes
- Translucent green backing enables easy identification for splicing applications
- Ideal for composite bonding, aerospace masking, and metal surface protection
- Meets multiple aerospace specifications including ASTM D3330, D3652, and D3759
- 140% elongation at break provides flexibility without compromising adhesive integrity
- Maintains flexibility in autoclave conditions and demanding industrial applications
- Bonds well on difficult surfaces including silicone-coated papers and films
Technical Specifications
| Specification |
Value |
| Product Name | 3M™ Polyester Tape 8403 |
| Part Number | 8403 |
| UPC Code | 00021200302909 |
| 3M ID | 7100011732 |
| Backing Material | Polyester |
| Adhesive Type | Silicone |
| Product Color | Green (Translucent) |
| Width (Imperial) | 24 inches |
| Width (Metric) | 609.6 mm |
| Length (Imperial) | 72 yards |
| Length (Metric) | 65.83 meters |
| Thickness | 2.4 mil (0.04 mm) |
| Tensile Strength (Imperial) | 46 lb/in |
| Tensile Strength (Metric) | 71.8 N/100mm |
| Elongation at Break | 140% |
| Minimum Operating Temperature (Fahrenheit) | -60°F |
| Minimum Operating Temperature (Celsius) | -50°C |
| Maximum Operating Temperature (Fahrenheit) | 425°F |
| Maximum Operating Temperature (Celsius) | 218°C |
| Units per Case | 1 Roll |
| Smallest Saleable Unit | Roll |
| Specifications Met | ASTM D3330, ASTM D3652, ASTM D3759 |
| Primary Applications | High Temperature Masking, Composite Bonding, Splicing |
| Industries Served | Aerospace, Appliance, Automotive, Construction, Electronics, General Industrial, Marine, Metalworking, Military & Government, Paper, Print, Specialty Vehicles, Transportation |
| Brand | 3M™ |
| Use Type | Industrial/Occupational Use Only |
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